Figure 5.

a) The MPP piezoresistive sensor is linked to a circuit included a Bluetooth module, which transfers wirelessly signal of finger tapping to the mobile phone. b) Chess pieces are placed on the 4×4 MPP piezoresistive sensor pixel arrays, and the corresponding pressure distributions were detected. c) The real‐time sensing for monitoring robot movements by the MPP piezoresistive sensor. d) The brightness response of LED varied with different applied pressure on the MPP piezoresistive sensor. e) Schematic diagram of the MXene/PEI fibrous network attached to skin surface for Joule heating. f) Temperature profiles of the MXene/PEI fibrous network with concentration of 0.8 mg mL⁻¹ under different operation voltages. g) IR thermal images of the MXene/PEI fibrous network with concentration of 0.8 mg mL⁻¹ at stepwise voltage rise from 0 to 12 V.